Among the exuberant
and heady nostalgia of the 100th anniversary Chelsea Flower Show is an
exhibit which touches a visceral British anxiety.

You could walk past it without noticing.
But if you do, it delivers a poignant message - particularly
in a week overshadowed by grim events on the other side of the capital.
A little oak tree struggles to fulfil its destiny on a small
island. Here, in horticultural form, is the tension of our nation. Are
we independent and proud or isolated and vulnerable?
The wider message of the garden that includes the oak
seedling (these days gardens at Chelsea are almost expected to have a
message) is "Stop the Spread". Our countryside is under threat from
invasive non-native species, says the leaflet.
"On the island in the middle of the pool a single seedling grows," the garden's designer Jo Thompson explains in the bumf.
"While at first it may seem vulnerable, it promises new
shoots of hope that reflect our aim of working together to help stop the
spread."
Concern about the loss of indigenous wildlife to foreign invaders was also a theme of Wednesday's State of Nature report.
Turtle doves and red squirrels, water voles and ladybirds - familiar
and much-loved British species are declining, often because of external
threats.
But does that fragile oak sapling also exemplify a force in our social and political sphere?

Green shoots

For some, the horrifying event in Woolwich this week is another
reason to question the diversity of culture and ideas in our little
island nation.
The challenge of globalisation and the worldwide web of
communications that shrink our planet shapes the national conversation
at the moment.
The sense of national essence diluted or contaminated by
multinational forces, is a large part of what drives support for the UK
Independence Party. The blazered white British gent with his pint of
foaming bitter is portrayed as an endangered species.
The frustration of some grassroot Conservatives is that the
Tory prime minister does not appear to share their determination to hold
out against the forces of change - whether that be the idea of gay
marriage or the prospect of Romanian and Bulgarian migrants arriving
courtesy of EU membership.
These concerns are not exclusive to the political right. In
deprived Labour heartlands up and down Britain, I have heard the same
fears:

jobs lost to the other side of the planet

foreigners squeezing local people out of housing, schools and public services

traditional habitat and customs being abandoned in a multicultural fog.

There is another anxiety reflected in that little oak
tree, though. It is of an island people cut off from the wider world -
isolated and exposed.
The British have a strong sense of their own decline.
Our national story is often framed in terms of a once-great global power on the wane.
You will regularly hear people talk blithely about this island country going to the dogs or to hell in a handcart.
The news may often read like a litany of ghastly events, but look beyond the headlines and it is clear that we are not.
I was talking to BBC journalists on Tuesday about the positive numbers that belie the struggles of austerity and global change.
In many ways, our neighbourhoods appear to be getting stronger:

The response to the Woolwich killing will test the strength of these improvements. The first signs are encouraging.
Challenges remain - plenty of them. But it is probably fair
to say that our island nation is somehow coping in difficult times. Keep
calm and carry on.
Perhaps the message of the little oak tree is that, if we take the time to look, there are shoots of hope.

RHS Chelsea Flower Show

Video | On the road to Chelsea

Video update: February 2011
With the show now only three months away, the B&Q Garden designers, Laurie Chetwood and Patrick Collins are well advanced with their plans. In this video, the third in a monthly series, they talk about their progress so far.Watch more video from the 2010 show